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Topic: CRC32

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	CRC32
		CRC32 is an algorithm used to create a validation string of data.
		Check as String: (Taken from: Fil's FAQ-Link-In Corner: CRC algorithms) This field is a check value that can be used as a weak validator of implementations of the algorithm.
		Poly as String: The poly used in the CRC32 algorithm.
	www.sevillaonline.com /ActiveX/code_snippets/crc32.htm (119 words)

	What is CRC32 (Cyclic redundancy checksum)?
		CRC32 is one of hash functions based on on the "polynomial" division idea.
		AccuHash 2.0 (the Windows utility for protecting the integrity and verifying the accuracy of data files) currently support CRC32 One of checksum calculation algorithms family based on Cyclic Redundancy Codes.
		CRC32 is used in SFV checksum file format, produced by many checksum utilities.
	www.accuhash.com /what-is-crc32.html (0 words)

	GameDev.net - Cyclic Redundancy Checking
		CRC32, of all the choices present, is most feasible since you do not have to worry about files that are of the same size when modified (very common with bitmap images, and a few other common game file types), and we do not have to worry about inaccurate file time/date stamps due to modified files.
		The advantage with CRC32 for signature checking is that the algorithm is designed so that a slight change in the file (be it a change, a delete, or an insert) should cause a large change in the CRC32 signature value.
		CRC32, like it is used in gaming, is also used outside of gaming for the same reasons; those being for file integrity checking and data integrity checking when data is copied.
	www.gamedev.net /reference/articles/article1941.asp (2316 words)

	SlavaSoft FastCRC Library - Highly Optimized CRC Library
		String checksum generation using the CRC16 checksum algorithm
		File checksum generation using the CRC32 checksum algorithm
		Source 1 (with frames, includes search by index and by word)
	www.slavasoft.com /fastcrc (0 words)

	CRC32 Calculator
		This program analyzes a file, calculates its CRC32 and then calculates what modification needs to be done (actually, addition to the end of the file up to 4 bytes) so that the file's new CRC matches a given CRC.
		As previous, this program analyzes a file, calculates its CRC32 and then calculates what modification needs to be done (actually, addition to the end of the file up to 4 bytes) so that the file's new CRC matches a given CRC.
		Command-line hack crc32 2 KB Windows version hack, main unit.
	www34.brinkster.com /dizzyk/crc32.asp (821 words)

	CRC32 Class Overview .NET (Site not responding. Last check: )
		CRC32 is the method used for a more effective error check for a set of binary data.
		It is generally used as a method for verifying that a set of data was transmitted properly over a data connection or as a way of verifying file integrity.
		The CRC32 encoding is most commonly used in the transport of binary data through data channels which are not considered to be 100% reliable.
	www.seekfordsolutions.com /Products/dotnet/NETEncoderWizard/OnlineHelp/Classes/CRC32/CRC32.htm (358 words)

	Nattyware / Papers / CRC32. Behind a reliability.
		The major misuse of CRC32 is confusing of its functional usage.
		There are lots of modern files authentication and validation tools using CRC32 as a MDC (Modification Detection Code) function.
		CRC32 is completely helpless against non-accidental tamper because it easily can be faked in just 4 bytes.
	www.nattyware.com /crc32fake.html (564 words)

	vbAccelerator - Calculating CRC32 With VB
		The CRC32 algorithm is a reliable way of checking whether an error has occurred in a sequence of bytes.
		There are various means of checking whether any bytes have been corrupted, for example, checksums and parity bits, but many simple schemes run a reasonably high chance of failing to detect an error depending on the type of corruption to the data that occurs.
		If you want to calculate CRC32 for a file, then you must use the cBinaryFileStream class which is provided as a source of the file data.
	www.vbaccelerator.com /home/vb/Code/Libraries/CRC32/article.asp (608 words)

	CRC32: Generating a checksum for a file - The Code Project - C++ / MFC
		CRC32: Generating a checksum for a file - The Code Project - C++ / MFC
		The most common CRC is CRC32, in which the "digital signature" is a 32-bit number.
		In CRC32 this is a table of 256 specific CRC numbers.
	www.codeproject.com /cpp/crc32.asp (1653 words)

	CRC32 Static Library 1.00 - Free download CRC32 Static Library 1.00
		The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a huge 20 MB (or even much bigger) file to have a small, handy reference to it, a single 32-bit number like 7d9c42fb (hexadecimal notation) which would unambiguously reflect the entire contents of this huge file.
		The algorithm of CRC32 is exactly the same as that internally used by PKZIP and WinZip; i.e.
		Though you can use CRC32 to calculate 32-bit checksums of any file the real strength and usefulness of CRC32 is in comparing Wave Sound Files to see if their non-silent music parts are identical.
	www.freedownloadswindows.com /659505/crc32staticlibrary_100.html (325 words)

	Filebasket - Programming › C, C++, Visual C Language Specific › CRC32 Static Library 1.00 Free Downloads at ...
		The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a huge 20 MB (or even much bigger) file to have a small, handy reference to it, a single 32-bit number like 7d9c42fb (hexadecimal notation) which would unambiguously reflect the entire contents of this huge file.
		Though you can use CRC32 to calculate 32-bit checksums of any file the real strength and usefulness of CRC32 is in comparing Wave Sound Files to see if their non-silent music parts are identical.
		In particular CRC32 may come in handy when comparing two different extractions of a CD Digital Audio track to ensure that the performed digital copy is perfect.
	www.simtel.net /product.php[id]71761[cid]229[SiteID]filebasket (431 words)

	Crc32 library section at Free Download Manager
		The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a huge 20 MB (or even much bigger) file to have a small, handy reference to it, a single 32-bit number like 7d9c42fb (hexadecimal notation) which would unambiguously reflect the entire contents of this huge
		CRC32 COM Component is for ASP,.NET, Cold Fusion, VB, VC++ and other languages.
		The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and Ethernet.
	www.freedownloadmanager.org /downloads/crc32_library_info (576 words)

	CRC32 downloads - Sentinel, Command Line SFV Checker, Duplicate Finder
		The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a huge 20 MB (or even much bigger) file to have a small, handy reference to it, a single 32-bit number like 7d9c42fb (hexadecimal notation) which would unambiguously reflect the entire contents of this huge
		CRC32 COM Component is for ASP,.NET, Cold Fusion, VB, VC++ and other languages.
		The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and Ethernet.
	www.vicman.net /lib/crc32.htm (1307 words)

	The CRC32 checksum algorithm
		CRC is a family of algorithms and CRC32 is one certain member of this family (other members are CRC16, XMODEM,...); CRC32 produces a checksum with a length of 32 Bit (= 4Byte).
		The Advanced CheckSum Verifier is an small, GUI-driven Windows checksum utility intended for creation and verification the checksum files both in SFV and MD5SUM formats.
		ACSV will help Windows users to protect the integrity of their files by using the CRC32 or MD5 checksum calculation algorithms.
	www.irnis.net /gloss/crc32.shtml (327 words)

	wxChecksums: CRC32 class Reference
		This class is writen with the code found in cksfv and zlib code.
		The CRC-32 checksum value can be gotten by the getValue method which puts the CRC32 checksum value in a unsigned 32 bits integer.
		The CRC32 checksum computing can be reseted by the reset method.
	wxchecksums.sourceforge.net /doxygen/classCRC32.html (122 words)

	Free Crc32 Downloads
		The algorithm of CRC32 is exactly the same as that internally used by PKZIP and WinZip; i.e.
		Though you can use CRC32 to calculate 32-bit checksums of any file the real strength and usefulness of CRC32 is in comparing Wave Sound Files to see if their non-silent music parts are identical.
		In particular CRC32 may come in handy when comparing two different extractions of a CD Digital Audio track to ensure that the performed digital copy is perfect.
	www.filesweb.com /crc32 (1154 words)

	SSH Vulnerability Scan
		Remote vulnerability in SSH daemon crc32 compensation attack detector" advisory, which outlined a gaping hole in deployed SSH servers that can lead to a remote attacker gaining privileged access.
		CRC32 compensation attack detector exploit." This exploit is currently widely in use.
		In April 2002, less than 20% of all SSH servers appear to have the CRC32 bug.
	www.citi.umich.edu /u/provos/ssh (229 words)

	GNUnet: crc32.c File Reference
		Go to the source code of this file.
		crc32 (uLong crc, const char *buf, size_t len)
		Compute the CRC32 checksum for the first len bytes of the buffer.
	www.gnunet.org /doxygen/html/crc32_8c.html (186 words)

	ALL WEB free PHP sicurezza con md5, sha1 (hash) e crc32
		Questa loro caratteristica dota queste funzioni di una sicurezza al momento senza confronti (Apriamo una parentesi per CRC32 a fine pagina).
		La funzione CRC32 è una storia a parte, la sua sicurezza non è provata al 100%, e solitamente non si utilizza per le password ma per il trasferimento di informazioni.
		Ad oggi CRC32 è consigliato per verificare il corretto transito di pacchetti di informazioni, in pratica dato un file che vogliamo trasmettere, ne ricaviamo il CRC32 e dopo la trasmissione verifichiamo che il CRC32 ottenuto dal pacchetto trasmesso sia sempre uguale, se si la trasmissione è andata a buon fine.
	www.allwebfree.it /articolo_php_md5_sha1_crc32.php (578 words)

	Crc32
		SFV Checker uses CRC-32 technology to check each file and notifies you of any potentially bad, corrupt, incorrect size or missing files to save you hours of downloading only to find you have 1 file missing or the last file has a CRC checksum error.
		The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a......
		The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and......
	www.downloadjunction.com /product/software/4936-560 (422 words)

	Calculating CRC32 for uploaded files - PHP
		crc32 is hardly the cutting edge of file hashes.
		> crc32 is hardly the cutting edge of file hashes.
		Basically, crc32 hashes aren't unique while md5 hashes are.
	www.thescripts.com /forum/thread8570.html (1087 words)

	AccuHash 2.0 - CRC32, MD5 and SHA1 Windows utility to verify accuracy of your files
		AccuHash 2.0 is Windows 95/98/Me/NT/2000/XP/2003 utility for protecting the integrity and verifying the accuracy of data files using checksum The value calculated from content of file.
		CRC32 usually is used only for control the casual damages of files because of the insecure nature of CRC32 algorithm.
		AccuHash 2.0 has the integrated Checksum Calculator an utility function, intended to calculate checksum value (CRC32, MD5 or SHA-1) of specified file or folder without creating checksum file.
	www.accuhash.com (980 words)

	zLib CRC32 by Jonne Lehtinen
		After browsing the internet for a while, searching for zlib.dll function VB references, I noticed that when calculating crc32, most (if not everyone) buffered the _whole_ file and then passing the buffer to crc32 function.
		This is extremely memory consuming and it can't calculate crc32 checksums of files that don't fit into the memory.
		For totaly confusing hackers, take the crc32 from the exe and then the crc16 from the resulting String to hide the information.
	www.planetsourcecode.com /vb/scripts/ShowCode.asp?txtCodeId=46387&lngWId=1 (1268 words)

	CRC32 - GameDev.Net Discussion Forums (Site not responding. Last check: )
		If a CRC32 is calculated for a file that ends in a CRC32 the new CRC32 is always 0x38FB2284.
		It has been brought to my attention that the algorithm in use is different than standard CRC32 since it is used to create CRC values for use on PPC systems and thus big-endian.
		It still seems to be incorrect for all files with the CRC32 appended to the end to generate the fixed CRC = 0x38FB2284.
	www.gamedev.net /community/forums/topic.asp?topic_id=448024 (762 words)

	CRC32 Static Library: CRC checking operations quick & easy
		On the other hand if the reference number was still the same (7d9c42fb) you might be sure that the file hasn t changed.
		You can use the 'pkunzip.exe -vt filename.zip' command to see that PKZIP s CRC-32 values of files stored inside the filename.zip are identical to that calculated by CRC32 for these files.
		In particular CRC32 may come in handy when comparing two different extractions of a CD Digital Audio track to ensure that the performed digital copy is perfect.
	www.softdll.com /developmenttools/crc32staticlibrary.html (306 words)

	CodeGuru: CRC32: Generating a checksum for a file
		The most common CRC is CRC32, in which the "digital signature" is a 32-bit number.
		In CRC32 this is a table of 256 specific CRC numbers.
		These numbers are generated by a polynomial (the computation of these numbers and what polynomial to use are part of that math stuff I'm avoiding).
	www.codeguru.com /Cpp/Cpp/algorithms/checksum/article.php/c5103 (1875 words)

	Crc32 Software: Crc32
		WINCRC32 uses CRC-32 technology to check each file and notifies you of any potentially bad, corrupt, incorrect size or missing files to save you hours of downloading only to find you have 1 file missing or the last file has a CRC checksum error.
		traction software, crc 32, crc32 static library, library, winzip, pkunzip, pkzip, crcs, 32 bit, ensure, checksum, component, crc32 com component, cd r, verifying, recording, windows, data, md5sum, transfer, error, advanced checksum verifier, irnis i haliullin, wincrc32, security wincrc crc32, paehl, crc value, crc checksum, sfv file, win sfv, checksum error, missing files
		It allows you to test the speed of memory copy and disk transfer operations under Windows 95 and Windows NT.
	www.filesrepository.com /software/crc32.html (438 words)

	sys/lib/crc32.c
		The generic crc32() function takes 10 * seed as an argument, and doesn't xor at the end.
		156 / 157 158 /* 159 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32 160 * @crc - seed value for computation.
		CRCPOLY_BE : 174 0); 175 } 176 return crc; 177 } 178 179 #else /* Table-based approach / 180 /* 181 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32 182 * @crc - seed value for computation.
	fxr.watson.org /fxr/source/lib/crc32.c?v=linux-2.4.22 (1790 words)

	BW CRC32 OCX 3.0.0 - BWDC
		This CRC check is a byte by byte verification of the string or file, if only one byte changes in the whole string or file then a different CRC will be returned, it will ensure the integrity of files or data after being transferred between network share paths or mapped drives.
		BW CRC32 OCX 3.0.0 - VB6 - BinaryWork Corp.
		BW CRC32 OCX 3.0.0 - VB5 - BinaryWork Corp.
	members.tripod.com /~Maquisistem/bwcrc.htm (307 words)

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